肾鳞状细胞癌1例

2018-06-04 张丽 张文文 黄刚 医学影像学杂志

患者女性,70岁。右侧腰背部胀痛不适半月余,伴尿频、尿急及排尿踌躇费力。

【一般资料】

患者女性,70岁。

【主诉】

右侧腰背部胀痛不适半月余,伴尿频、尿急及排尿踌躇费力。

【现病史】

入院前1日,突然出现血尿,呈洗肉水样,并伴有凝血块;查体右侧肾区无明显膨隆,无压痛及叩击痛。

【既往史】

既往体健。

【辅助检查】

腹部彩超示右肾多发结石。放射性核素检查示右肾功能重度受损。腹部CT平扫+增强示右肾体积增大,上极见一大小约5.6cm×4.6cm×3.5cm的肿物,边界不清晰,其内密度不均匀,中心可见液化坏死区,增强后轻度不均匀强化(图1~3),考虑为右肾恶性肿瘤可能性大;肾实质内近肾盂处多个不规则结石。





【治疗】

手术及病理:行腹腔镜探查及右肾切除术,取出右肾及周围脂肪组织,未见明显肿大淋巴结,肾静脉未见癌栓。切除右肾肉眼观呈灰黄灰白色,大小约13.5cm×8.0cm×6.0cm。镜下肾组织切面大部分区域坏死,结构不清,未见输尿管残端,细胞异型性明显,病理性核分裂象多见(图4);病理诊断:考虑为右肾高分化鳞状细胞癌,癌组织广泛浸润肾实质及肾被膜外脂肪。术后患者好转出院,随访11个月后因广泛转移去世。



【讨论】

肾脏鳞状细胞癌约占上尿路恶性肿瘤的0.7%~7.0%,术前误诊率57%,其发生与肾脏结石和慢性炎症刺激有关。本患者考虑多与结石的长期刺激有关。本病可发生于不同年龄段,通常60岁左右的女性发病率略高,也可见于40岁以下者,因此,在本病的早期诊断中要警惕。一般来说,肾脏恶性肿瘤主要以影像学检查为主,仅超声和CT检查的准确率可分别达98.6%和95.0%。但是本病临床复杂多变,以CT和MRI为主的检查仅表现为一般恶性肿瘤的特征,所以,最后确诊主要依赖于组织病理学的检查。但是CT检查,尤其是CT增强扫描在该肿瘤的鉴别诊断、分期及随访中是十分重要的。本例中,CT三期扫描未见明显特异性,但可以指导和鉴别诊断。肾脏的大多数恶性肿瘤在CT平扫中一般无明显差异,在增强后肾脏一些较多见的恶性肿瘤,如透明细胞癌瘤体实性部分在皮质期会明显强化,强化程度接近肾皮质,于实质期强化迅速降低,呈“快进快出”型;而乳头状癌和嫌色细胞癌增强后肿瘤实性部分强化程度低,明显低于肾皮质,其后各期强化有增高趋势,呈“缓慢升高”型等特点,在排除肾脏一些较多见的恶性肿瘤基础上,若肾结石或慢性肾盂肾炎病史较长的患者突然出现腰痛、血尿、消瘦等恶病质的表现,发现肾内占位者,多应考虑伴发肾鳞状细胞癌的可能。

原始出处;

张丽, 张文文, 黄刚. 肾鳞状细胞癌1例[J]. 医学影像学杂志, 2017, 27(7):1363-1363.

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    2018-06-08 大爰

    学习并分享!!

    0

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    2018-06-06 虈亣靌

    好好学习天天向上认真学习

    0

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    2018-06-06 大爰

    学习了谢谢分享!!

    0

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